A child's pushchair seat assembly

Abstract

The utility model discloses a kind of child stroller seat components, rotatably connected with seat part on clamping seat, backrest part is equipped between seat part and clamping seat, handrail part is equipped between backrest part and clamping seat, locking structure is equipped between seat part, handrail part and clamping seat, still be equipped with locking structure between backrest part and seat part, when unlocking and backrest part rotates folding relative to seat part in locking structure, backrest part drives locking structure to unlock and push handrail part and seat part relative to clamping seat rotation, and, unlocking element that can promote unlocking linkage element on child stroller frame movement when rotating folding is equipped on handrail part, unlocking element includes push block, abutting wall that push block abuts when rotating folding is equipped on handrail part, handrail part is also equipped with accommodation space, torsion spring is also equipped between push block and handrail part.The utility model child stroller seat component can drive child stroller frame unlocking when rotating folding relative to child stroller frame.

Description

[Technical Field]

[0001] This utility model relates to a child stroller seat assembly. [Background Technology]

[0002] Strollers are common products in a child's growth process. They generally include a stroller frame and a seat assembly that can be detached and attached to the stroller frame. They can be unfolded or folded. When unfolded, they are used for children to sit in, and when folded, they are easy to carry or store.

[0003] Chinese patent (CN119840700A) discloses a stroller structure in which, when the seat is rotated and folded, a convex shaft on the seat rotates accordingly. The pushing surface on the convex shaft pushes a linkage block inside the seat connector to slide, and the linkage block pushes an unlocking linkage on the frame to unlock the frame. In other words, the frame unlocks through the cooperation of the pushing block and the unlocking linkage when the seat rotates and folds, making the stroller folding operation convenient and quick. However, with this structure, the seat will push the pushing block and unlock the locking device as soon as it rotates, requiring the user to hold the seat assembly with one hand and the rest of the stroller with the other, making the unfolding operation inconvenient.

[0004] This utility model was developed based on the above-mentioned shortcomings. [Utility Model Content]

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a simple stroller seat assembly. After the seat assembly is installed on the stroller frame, it can unlock the stroller frame when the seat assembly rotates and folds relative to the stroller frame, making the folding operation of the entire stroller convenient and quick. Furthermore, when unfolding the stroller, the stroller frame can be unfolded first and then the seat assembly, or vice versa, making the unfolding operation of the stroller very convenient and quick.

[0006] This utility model is achieved through the following technical solution:

[0007] A stroller seat assembly includes a locking seat that engages with a connecting seat on a stroller frame. A seat portion is rotatably connected to the locking seat. A backrest that can rotate relative to the seat portion and the locking seat is provided between the seat portion and the locking seat. An armrest portion that can rotate relative to the backrest portion and the locking seat is provided between the backrest portion and the locking seat. A locking structure is provided between the seat portion, the armrest portion, and the locking seat. A locking mechanism is also provided between the backrest portion and the seat portion to lock them together. When the locking mechanism is unlocked and the backrest portion is rotated and folded relative to the seat portion, the backrest portion's locking mechanism is unlocked. The armrest and seat are pushed to rotate relative to the locking seat and fold towards the stroller frame. The armrest is provided with an unlocking component that can push the unlocking linkage element on the stroller frame to move and unlock the stroller frame when it is rotated and folded. The unlocking component includes a push block that is rotatably connected to the armrest and protrudes from the outer periphery of the armrest. The armrest is provided with an abutment wall that abuts against the push block when it is rotated and folded. The armrest is also provided with a clearance space to make way for the rotational movement of the push block when it is rotated and unfolded. A torsion spring is also provided between the push block and the armrest.

[0008] The armrest is provided with a recessed groove at an eccentric position. The push block is rotatably connected in the recessed groove. One side wall of the recessed groove forms the abutment wall. The abutment wall can abut against the side wall of the push block so that the armrest can apply a pushing force to the push block when it is rotated and folded. The clearance space is the interval between the push block and the other side wall of the recessed groove.

[0009] The aforementioned card holder has a card slot that can be snapped onto the connecting seat from top to bottom, and the aforementioned unlocking element has two parts arranged in a circumferential array on the armrest.

[0010] The seat, backrest, armrest, and locking seat are connected together by a connecting shaft. The connecting shaft has a pin that can slide inside it and can engage or disengage with an axial locking hole on the connecting seat when the locking seat is engaged with the connecting seat. A pull rope connected to the pin is also threaded through the connecting shaft. The seat has an exposed handle that can pull the pull rope. A first return spring is also provided between the connecting shaft and the pin that can push the pin to slide back to its original position.

[0011] The locking structure includes a locking groove on the seat, a locking rod that can engage or disengage from the locking groove and slide inside the backrest, a pull cable on the locking rod, a switch that can pull the pull cable on the backrest, and a second return spring that can push the locking rod back to its original position between the locking rod and the backrest.

[0012] The locking structure includes a first locking groove on the seat portion along the circumferential direction, a second locking groove on the latching seat along the circumferential direction, and a third locking groove on the armrest portion along the circumferential direction. A laterally movable engagement spline is provided within the space enclosed by the seat portion, backrest, armrest portion, and latching seat. The engagement spline has locking teeth that can simultaneously engage with the first, second, and third locking grooves. An inclined sliding surface is provided on the engagement spline along the circumferential direction. A push block is provided on the backrest portion that, when rotated and folded relative to the seat portion, pushes against the inclined sliding surface to disengage the locking teeth from the second and third locking grooves. A third return spring is also provided between the seat portion and the engagement spline to push the engagement spline to return to its lateral position.

[0013] The latching seat is provided with a protruding convex shaft, the second locking groove is provided on the convex shaft, and the armrest is sleeved on the outside of the convex shaft.

[0014] The backrest is provided with a protruding limiting protrusion, and the seat is provided with a limiting wall that can abut against the limiting protrusion to limit the rotation angle of the backrest when the backrest rotates relative to the seat.

[0015] The backrest is fitted onto the seat, and there are at least three locking slots arranged circumferentially on the seat.

[0016] Compared with the prior art, the present invention has the following advantages: After the locking structure of the present invention is unlocked, the backrest can rotate and fold relative to the seat. During the rotation and folding process, the backrest drives the locking structure to unlock and push the armrest and seat to rotate and fold. During the rotation and folding process, the push block on the armrest contacts the unlocking linkage element on the stroller frame. Due to the abutment wall on the armrest against the push block, the armrest can push the unlocking linkage element to move during the rotation and folding process, so as to unlock the stroller frame and finally complete the folding of the entire stroller. When the stroller needs to be unfolded, the seat and armrests rotate in opposite directions. The push block contacts the unlocking linkage element. Because the push block is rotatably connected to the armrests, and because there is a clearance space on the armrests and a torsion spring between the armrests and the push block, when the armrests and seat unfold, the push block rotates relative to the armrests into the clearance space upon contact with the unlocking linkage element. The torsion spring deforms. Once the push block moves from the rear to the front of the unlocking linkage element, the torsion spring elastically returns to its original position, and the push block rotates back to its position against the wall. Therefore, during the seat assembly's rotation and unfolding, the push block does not push the unlocking linkage element to move. This allows the stroller to be unfolded by operating the seat assembly or the stroller frame independently, without needing to hold both the seat assembly and other parts simultaneously, making the stroller unfolding operation convenient and quick. [Attached Image Description]

[0017] Figure 1 This is a perspective view of the present invention installed on a children's stroller frame;

[0018] Figure 2 This is a schematic diagram of the present invention when separated from the stroller frame;

[0019] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 yes Figure 2 Enlarged view at point B;

[0021] Figure 5 This is one of the exploded views of the components of this utility model;

[0022] Figure 6 This is the second exploded view of a component of this utility model;

[0023] Figure 7 This is a cross-sectional view of a component of this utility model;

[0024] Figure 8 This is a perspective view of a component of this utility model.

Detailed Implementation Methods

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1 to 4As shown, a stroller seat assembly includes a locking seat 1 that engages with a connecting seat 101 on a stroller frame 100. A seat portion 2 is rotatably connected to the locking seat 1. A backrest 3, which can rotate relative to the seat portion 2 and the locking seat 1, is provided between the backrest 3 and the locking seat 1. An armrest portion 4, which can rotate relative to the backrest 3 and the locking seat 1, is provided between the seat portion 2, the armrest 4, and the locking seat 1. A locking mechanism 6, which locks the backrest 3 and the seat portion 2, is also provided between the backrest 3 and the seat portion 2. When the locking mechanism 6 is unlocked and the backrest 3 rotates and folds relative to the seat portion 2, the backrest 3 drives the locking mechanism 5 to unlock and push. The armrest 4 and seat 2 rotate relative to the locking seat 1 and fold towards the stroller frame 100. The armrest 4 is provided with an unlocking member 7 that can push the unlocking linkage element 102 on the stroller frame 100 to move and unlock the stroller frame 100 when it is rotated and folded. The unlocking member 7 includes a push block 71 that is rotatably connected to the armrest 4 and protrudes from the outer periphery of the armrest 4. The armrest 4 is provided with an abutting wall 41 that abuts against the push block 71 when it is rotated and folded. The armrest 4 is also provided with a clearance space 42 that makes way for the rotational movement of the push block 71 when it is rotated and unfolded. A torsion spring 72 is also provided between the push block 71 and the armrest 4. After the locking structure 6 is unlocked, the backrest 3 can rotate and fold relative to the seat 2. During the rotation and folding process, the backrest 3 drives the locking structure 5 to unlock and push the armrest 4 and the seat 2 to rotate and fold. During the rotation and folding process, the push block 71 on the armrest 4 contacts the unlocking linkage element 102 on the stroller frame 100. Due to the abutment wall 41 on the armrest 4 abutting against the push block 71, the armrest 4 can push the unlocking linkage element 102 to move through the push block 71 during the rotation and folding process, so as to unlock the stroller frame and finally complete the folding of the entire stroller. After the stroller is folded, the unlocking linkage element 102 returns to its original position, and the push block 71 moves from the front side to the rear side of the unlocking linkage element 102. When the stroller needs to be unfolded, the seat 2 and armrest 4 rotate in opposite directions, and the push block 71 touches the unlocking linkage element 102. Since the push block 71 is rotatably connected to the armrest 4, and the armrest 4 is provided with a clearance space 42 and a torsion spring 72 is provided between the armrest 4 and the push block 71, when the armrest 4 and the seat 2 are unfolded, the push block 71 will rotate relative to the armrest 4 into the clearance space 42 when it touches the unlocking linkage element 102. The torsion spring 72 will deform. Once the push block 71 moves from the rear side to the front side of the unlocking linkage element 102, the torsion spring 72 will elastically return, and the push block 71 will rotate back to the position of abutting against the wall 41.Therefore, during the rotation and unfolding of the seat assembly, the push block 71 will not push the unlocking linkage element 102 to move. This allows the stroller to be unfolded by operating the seat assembly to rotate and unfold separately, or by operating the stroller frame to rotate and unfold separately, without having to hold the seat assembly and other parts with both hands at the same time, making the stroller unfolding operation convenient and quick.

[0027] like Figure 5 As shown, a recessed groove 43 is provided at an eccentric position of the armrest 4. The push block 71 is rotatably connected within the recessed groove 43. One side wall of the recessed groove 43 forms the abutment wall 41. The abutment wall 41 abuts against the side wall of the push block 71, allowing the armrest 4 to apply a pushing force to the push block 71 when it rotates and folds. This pushing force causes the unlocking linkage element 102 to move, thereby unlocking and folding the stroller frame 100. The clearance space 42 is the interval between the push block 71 and the other side wall of the recessed groove 43.

[0028] like Figure 5 As shown, the latching seat 1 can be latched onto the connecting seat 101 from top to bottom via latching grooves 11. Two unlocking members 7 are arranged in a circumferential array on the armrest 4. The latching seat 1 is detachably connected to the connecting seat 101 via the latching grooves 11, allowing the seat assembly to be rotated forward and backward. The two unlocking members 7 ensure that the stroller frame can be easily unlocked and folded during rotation and folding regardless of whether the seat assembly is facing forward or backward, and can also be easily rotated and unfolded.

[0029] like Figures 5 to 7 As shown, the seat 2, backrest 3, armrest 4, and locking seat 1 are connected together by a connecting shaft 81. The connecting shaft 81 contains a pin 82 that can slide within it and engage or disengage from the axial locking hole 103 on the connecting seat 101 when the locking seat 1 engages with the connecting seat 101. A pull rope 83 connected to the pin 82 also passes through the connecting shaft 81. The seat 2 has an exposed handle 84 for pulling the pull rope. A first return spring 85 is provided between the connecting shaft 81 and the pin 82 to push the pin 82 back to its original position. When the locking seat 1 engages with the connecting seat 101, the pin 82 is laterally inserted into the axial locking hole 103, making the connection between the seat assembly and the stroller frame 100 very secure. When the seat assembly needs to be disassembled, simply lift the handle 84; the pull rope 83 will pull the pin 82 away from the axial locking hole 103, allowing the seat assembly to be lifted upwards and removed.

[0030] like Figure 5 and Figure 6As shown, the locking structure 6 includes a locking groove 61 on the seat portion 2, a locking rod 62 slidably disposed within the backrest 3 that can engage or disengage from the locking groove 61, a pull cable 63 on the locking rod 62, and a switch 64 on the backrest 3 that can pull the pull cable 63. A second return spring 65 is provided between the locking rod 62 and the backrest 3 to push the locking rod 62 back to its original position. When the switch 64 is operated to pull the pull cable 63, the locking rod 62 disengages from the locking groove 61, at which point the backrest 3 can rotate and fold relative to the seat portion 2. In this embodiment, the backrest 3 is fitted onto the seat portion 2, and there are at least three locking grooves 61 arranged circumferentially on the seat portion 2, so that the backrest 3 can remain in multiple tilted positions when unfolded, allowing children to choose a comfortable position according to their needs.

[0031] like Figure 5 and Figure 6 As shown, the locking structure 5 includes a first locking groove 51 provided on the seat part 2 along the circumferential direction, a second locking groove 52 provided on the latching seat 1 along the circumferential direction, and a third locking groove 53 provided on the armrest part 4 along the circumferential direction. A horizontally movable engagement spline 54 is provided in the space enclosed by the seat part 2, backrest 3, armrest part 4, and latching seat 1. The engagement spline 54 is provided with locking teeth 55 that can engage simultaneously with the first locking groove 51, the second locking groove 52, and the third locking groove 53. The engagement spline 54 is provided with a sloping surface 56 along the circumferential direction. The backrest 3 is provided with a push block 57 that can push the sloping surface 56 to disengage the locking teeth 55 from the second locking groove 52 and the third locking groove 53 when it rotates and folds relative to the seat part 2. A third return spring 58 is also provided between the seat part 2 and the engagement spline 54 to push the engagement spline 54 to return to its horizontal position. When the locking structure 6 is unlocked and the backrest 3 rotates and folds relative to the seat 2, the push block 57 on the backrest 3 pushes the inclined sliding surface 56 on the engaging spline 54, causing the engaging spline 54 to move laterally. During this lateral movement, the locking teeth 55 on the engaging spline 54 disengage from the second locking groove 52 on the locking seat 1 and the third locking groove 53 on the armrest 4. At this time, the seat 2 and the armrest 4 can rotate relative to the locking seat 1 and move closer to the stroller frame 1. Furthermore, during the rotation and folding process, the backrest 3 can also exert pressure on the armrest 4, causing the armrest 4 to transmit force to the push block 71 through the abutment wall 41. This push block 71 then pushes the unlocking linkage element 102 to move, thereby unlocking the stroller frame 100. Therefore, the stroller frame 100 is unlocked during the rotation and folding process of the backrest 3, seat 2, and armrest 4, making the stroller folding operation convenient and quick.

[0032] like Figure 6As shown, the snap-fit ​​seat 1 is provided with a protruding convex shaft 12, the second locking groove 52 is provided on the convex shaft 12, and the armrest part 4 is sleeved on the outside of the convex shaft 12, so that the armrest part 4 rotates smoothly.

[0033] like Figure 5 As shown, the backrest 3 is provided with a protruding limiting protrusion 31, and the seat part 2 is provided with a limiting wall 21 that abuts against the limiting protrusion 31 when the backrest 3 rotates relative to the seat part 2. The rotation angle of the backrest 3 is limited and controlled by the cooperation of the limiting protrusion 31 and the limiting wall 21, which facilitates user operation.

[0034] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A stroller seat assembly, characterized in that: The stroller includes a locking seat (1) that engages with a connecting seat (101) on a stroller frame (100). A seat (2) is rotatably connected to the locking seat (1). A backrest (3) that can rotate relative to the seat (2) and the locking seat (1) is provided. An armrest (4) that can rotate relative to the backrest (3) and the locking seat (1) is provided. A locking structure (5) is provided between the seat (2), the armrest (4), and the locking seat (1). A locking mechanism (6) is also provided between the backrest (3) and the seat (2) to lock them together. When the locking mechanism (6) is unlocked and the backrest (3) rotates and folds relative to the seat (2), the backrest (3) drives the locking mechanism (5) to unlock and pushes the armrest (4). The seat (2) rotates relative to the locking seat (1) and folds toward the stroller frame (100). The armrest (4) is provided with an unlocking member (7) that can push the unlocking linkage element (102) on the stroller frame (100) to move and unlock the stroller frame (100) when it is rotated and folded. The unlocking member (7) includes a push block (71) that is rotatably connected to the armrest (4) and protrudes from the outer periphery of the armrest (4). The armrest (4) is provided with an abutting wall (41) that abuts against the push block (71) when it is rotated and folded. The armrest (4) is also provided with a clearance space (42) that makes way for the rotational movement of the push block (71) when it is rotated and unfolded. A torsion spring (72) is also provided between the push block (71) and the armrest (4).

2. The stroller seat assembly according to claim 1, characterized in that: The armrest (4) is provided with a recessed groove (43) at an eccentric position. The push block (71) is rotatably connected in the recessed groove (43). One side wall of the recessed groove (43) forms the abutment wall (41). The abutment wall (41) can abut against the side wall of the push block (71) so that the armrest (4) can apply a pushing force to the push block (71) when it rotates and folds. The clearance space (42) is the interval between the push block (71) and the other side wall of the recessed groove (43).

3. The stroller seat assembly according to claim 2, characterized in that: The card holder (1) can be snapped into the card slot (11) on the connecting seat (101) from top to bottom, and there are two unlocking members (7) arranged in a circumferential direction on the armrest (4).

4. The stroller seat assembly according to claim 1, 2, or 3, characterized in that: The seat (2), backrest (3), armrest (4) and locking seat (1) are connected together by a connecting shaft (81). The connecting shaft (81) is provided with a pin (82) that can slide inside it and can engage or disengage with the axial locking hole (103) on the connecting seat (101) when the locking seat (1) is engaged with the connecting seat (101). A pull rope (83) connected to the pin (82) is also passed through the connecting shaft (81). The seat (2) is provided with an exposed handle (84) that can pull the pull rope. A first return spring (85) that can push the pin (82) to slide back to its original position is also provided between the connecting shaft (81) and the pin (82).

5. The stroller seat assembly according to claim 4, characterized in that: The locking structure (6) includes a locking groove (61) on the seat (2), a locking rod (62) that can engage or disengage from the locking groove (61) is slidably provided in the backrest (3), a pull cable (63) is provided on the locking rod (62), a switch (64) that can pull the pull cable (63) is also provided on the backrest (3), and a second return spring (65) that can push the locking rod (62) to reset is provided between the locking rod (62) and the backrest (3).

6. The stroller seat assembly according to claim 4, characterized in that: The locking structure (5) includes a first locking groove (51) provided on the seat part (2) along the circumferential direction, a second locking groove (52) provided on the latching seat (1) along the circumferential direction, and a third locking groove (53) provided on the armrest part (4) along the circumferential direction. A horizontally movable locking spline (54) is provided within the space enclosed by the seat part (2), backrest (3), armrest part (4), and latching seat (1). The locking spline (54) is provided with a mechanism that can engage with the first locking groove (51) and the second locking groove (52) along the circumferential direction. 2) A locking tooth (55) that engages with the third locking groove (53) simultaneously. The engaging spline (54) has a sloping surface (56) along the circumferential direction. The backrest (3) has a push block (57) that can push the sloping surface (56) to disengage the locking tooth (55) from the second locking groove (52) and the third locking groove (53) when it rotates and folds relative to the seat part (2). A third return spring (58) that can push the engaging spline (54) to return to its horizontal position is also provided between the seat part (2) and the engaging spline (54).

7. The stroller seat assembly according to claim 6, characterized in that: The latching seat (1) is provided with a protruding convex shaft (12), the second locking groove (52) is provided on the convex shaft (12), and the armrest (4) is sleeved on the outside of the convex shaft (12).

8. The stroller seat assembly according to claim 6, characterized in that: The backrest (3) is provided with a protruding limiting protrusion (31), and the seat part (2) is provided with a limiting wall (21) that can abut against the limiting protrusion (31) to limit the rotation angle of the backrest (3) when the backrest (3) rotates relative to the seat part (2).

9. The stroller seat assembly according to claim 5, characterized in that: The backrest (3) is fitted onto the seat (2), and there are at least three locking grooves (61) arranged on the seat (2) in a circumferential direction.

Images